Related Experiment Video
Updated: Aug 17, 2026

In Vitro Assay of Plasmodium-Infected Red Blood Cell Killing by Cytotoxic Lymphocytes
Published on: August 17, 2022
Anemia and thrombocytopenia in children with Plasmodium vivax malaria
Alfonso J Rodríguez-Morales1, Elia Sánchez, Miguel Vargas
1Environmental Health (Regional Malariology Office), Ministry of Health, Sucre, Venezuela.
Insights
Pediatric Plasmodium vivax malaria often causes anemia and thrombocytopenia, requiring hospitalization. Prompt antimalarial treatment and supportive care led to successful recovery in all children, with no deaths.
Area of Science:
- Infectious Diseases
- Pediatrics
- Hematology
Background:
- Plasmodium vivax malaria is a significant global health concern, particularly in pediatric populations.
- Anemia and thrombocytopenia are common complications of P. vivax malaria, potentially leading to severe outcomes.
- Understanding the clinico-epidemiological features of these complications is crucial for effective management.
Purpose of the Study:
- To describe the clinical and epidemiological characteristics of pediatric patients with P. vivax malaria.
- To investigate the incidence and severity of anemia and thrombocytopenia in hospitalized children with P. vivax malaria.
- To report treatment outcomes and complications in this patient cohort.
Main Methods:
- Retrospective analysis of 78 pediatric patients hospitalized with P. vivax malaria over a 3-year period in Sucre, Venezuela.
- Data collection included clinical manifestations, paraclinical evaluations (hemoglobin, platelet counts), and treatment outcomes.
- Statistical analysis of demographic, clinical, and laboratory findings.
Main Results:
- Fever (93.59%), anemia (94.87%), and thrombocytopenia (58.97%) were prevalent among hospitalized children.
- Severe anemia and thrombocytopenia were observed in 10.26% and 24.36% of patients, respectively.
- All patients were successfully discharged after treatment with chloroquine and primaquine, with no mortality.
Conclusions:
- Plasmodium vivax malaria in children frequently presents with anemia and thrombocytopenia, necessitating hospitalization.
- Effective antimalarial treatment and supportive care result in favorable outcomes, even in cases with severe hematological complications.
- Persistent mild thrombocytopenia may occur post-treatment in a subset of pediatric patients.
Abstract:
Clinico-epidemiological features of pediatric patients with malaria due Plasmodium vivax that developed anemia and thrombocytopenia requiring hospitalization are herein reported. Over a 3-year period, 78 children with P. vivax infection were admitted to our Hospital in Sucre, Venezuela. Clinical manifestations at admission were 93.59 per cent fever, 41.03 per cent chills and 14.10 per cent headache, among others. On paraclinical evaluations 94.87 percent presented with anemia (10.26 per cent severe), 25.64 percent with malnutrition, and 10.26 percent had intestinal parasitosis. The mean hemoglobin levels on admission were 8.09 g/dl and mean platelet counts 127 402 cells/mm3. Among these patients 58.97 per cent developed thrombocytopenia (24.36 per cent severe) requiring transfusion in 25.64 per cent of patients. After antimalarial treatment with chloroquine and primaquine and supportive care all patients were successfully discharged. No deaths or further complications were seen, except for persistent mild thrombocytopenia in 17.95 per cent of the patients.
More Related Videos
Related Concept Videos
Malaria
Disorders of Hemostasis
Thromboembolic Disorders
Two factors primarily cause thromboembolic conditions.
Disorders of Erythrocytes
Erythrocyte disorders can be broadly categorized into two main types: anemic and polycythemic conditions.
A low oxygen-carrying capacity of the blood due to the loss, lower production, or destruction of erythrocytes is termed anemia. Hemorrhagic anemia, for example, occurs when bleeding from an external wound or internal ulcer reduces erythrocyte counts.
On the other...
Diversity of Protists II
Leishmaniasis
Blood Transfusion and Agglutination
History
The history of blood transfusion dates back to the 17th century, when early attempts were made in animals. In 1818 James Blundell, a British doctor, performed the first successful human blood transfusion. Later in 1900, Karl...

